Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Fen Edebiyat Fakültesi, Kimya Bölümü, Türkiye
Tezin Onay Tarihi: 2014
Tezin Dili: İngilizce
Öğrenci: Damla Şenlik
Danışman: SEMRA TUNCEL
Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
Özet:In this study, the Phthalate Esters, which are specifically Dimethyl Phthalate (DMP), Diethyl Phthalate (DEP), Dibutyl Phthalate (DBP), Butylbenzyl Phthalate (BBP), Diethlyhexzyl Phthalate (DEHP), and Dioctylphthalate (DOP), were evaluated in the 5 different pasteurized milk samples and their packages that were chosen from the Turkish market. As validated extraction methodology Ultrasound Assisted Dispersive Liquid Liquid Micro Extraction (UA-DLLME) and Ultrasonic Bath Extraction (UBE) were used for the milk samples and packages, respectively. Gas Chromatography-Mass Spectroscopy (GC-MS) was used as the analytical instrumentation. Extraction efficiencies of the UA-DLLME were in between 66-100% while the ones that belong to UBE were in between 115-127%. For both the pasteurized milk samples and their packages, DBP and DEHP were found as the most common phthalate esters in each of five milk and package samples. DBP values that are obtained after the analysis of milk samples were between 3.08-5.03 ng/g while DEHP values were in between 0.41-4.00 ng/g. Concentration of DBP in milk packages were in between 1.05-2.03 ng/g while concentration of DEHP values were in between 30.0-62.6 ng/cm2. Concentration of DOP was found as the lowest concentrated phthalate ester in milk packages. It is only found in Milk Package Sample E as 2.42 ng/g while no DOP was found in milk samples. In addition, the results of this study and the found values of the phthalate levels were compared with the other studies performed in other countries.